Aniline → HCID 178515311, compound

Participants

Reaction Steps

The general synthesis described in Scheme 1 is similar to the one described in U.S. Pat. No. 4,176,184. Briefly, reduction of 8-nitroisoquinoline-1,3(2H,4H)-dione 1(i) (prepared according to the procedure described in DE 3410168) to the corresponding aniline 1(ii) followed by acylation with acyl chloride and cyclization of the resulting amide gave 1H-imidazol[4,5-h]isoquinoline-7,9(6H,8H)-dione 1 (iii). Alkylation of 1(iii) with 1-bromo-3-chloropropane gave 1(iv), which reacted with a primary amine to give 1(v). If necessary, the transformation of R1a and R3a to R1 and R3 by methods known to the skilled in the art (including, but not limited to, removal of protective group, alkylation, oxidation and reduction) gave the compounds of formula (I) or (Ia).

Provenance & Evidence